Anti-theft device



FIG. 1 is a perspective view of an anti-theft device showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof.

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is an exploded view as viewed from the left side thereof;

FIG. 9 is a view of a front portion taken along line 9—9 of FIG. 9; and,

FIG. 10 is a view of a rear portion taken along line 10—10 of FIG. 8. 

The ornamental design for an anti-theft device, as shown and described. 